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Add suport for TI INA238 power monitor #6629

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merged 2 commits into from
Jan 26, 2025
Merged

Add suport for TI INA238 power monitor #6629

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88b6430
add ina238 to i2c-sensors
jsarrett Jan 26, 2025
ffcb484
configs: add CONFIG_SENSORS_INA238=m
jsarrett Jan 26, 2025
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13 changes: 13 additions & 0 deletions arch/arm/boot/dts/overlays/README
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Original file line number Diff line number Diff line change
Expand Up @@ -2486,11 +2486,20 @@ Params: addr Set the address for the ADT7410, BH1750, BME280,
ds1621 Select the Dallas Semiconductors DS1621 temp
sensor. Valid addresses 0x48-0x4f, default 0x48

gain Gain used for measuring shunt resistor current.
Valid values 1 or 4, default 1. (ina238 only,
disabled by default)

hdc100x Select the Texas Instruments HDC100x temp sensor
Valid addresses 0x40-0x43, default 0x40

htu21 Select the HTU21 temperature and humidity sensor

ina238 Select the TI INA238 power monitor. Valid
addresses 0x40-0x4F, default 0x40.
Uses parameters shunt-resistor and
ti,shunt-gain for configuration

int_pin Set the GPIO to use for interrupts (max30102,
mpu6050 and mpu9250 only)

Expand Down Expand Up @@ -2549,6 +2558,10 @@ Params: addr Set the address for the ADT7410, BH1750, BME280,
reset_pin GPIO to be used to reset the device (bno055
only, disabled by default)

shunt_resistor Value of shunt resistor used for current
measurement in uOhms. (ina238 only, disabled
by default)

sht3x Select the Sensirion SHT3x temperature and
humidity sensors. Valid addresses 0x44-0x45,
default 0x44
Expand Down
26 changes: 25 additions & 1 deletion arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi
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Expand Up @@ -526,6 +526,27 @@
};
};

fragment@35 {
target = <&i2cbus>;
__dormant__ {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";

ina238: ina238@48 {
compatible = "ti,ina238";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x40>;
/* uOhms, uint32_t */
shunt-resistor = <1000>;
/* 1 or 4, (±40.96 mV or ±163.84 mV) */
ti,shunt-gain = <1>;
status = "okay";
};
};
};

fragment@99 {
target = <&gpio>;
__dormant__ {
Expand Down Expand Up @@ -573,6 +594,7 @@
bno055 = <0>,"+31";
sht4x = <0>,"+32";
adt7410 = <0>,"+34";
ina238 = <0>,"+35";

addr = <&bme280>,"reg:0", <&bmp280>,"reg:0", <&tmp102>,"reg:0",
<&lm75>,"reg:0", <&hdc100x>,"reg:0", <&sht3x>,"reg:0",
Expand All @@ -582,13 +604,15 @@
<&ms5837>,"reg:0", <&ms8607>,"reg:0",
<&mpu6050>,"reg:0", <&mpu9250>,"reg:0",
<&bno055>,"reg:0", <&sht4x>,"reg:0",
<&bmp380>,"reg:0", <&adt7410>,"reg:0";
<&bmp380>,"reg:0", <&adt7410>,"reg:0", <&ina238>,"reg:0";
int_pin = <&int_pins>, "brcm,pins:0",
<&int_pins>, "reg:0",
<&max30102>, "interrupts:0",
<&mpu6050>, "interrupts:0",
<&mpu9250>, "interrupts:0";
no_timeout = <&jc42>, "smbus-timeout-disable?";
reset_pin = <&bno055>,"reset-gpios:4", <0>,"+30";
shunt_resistor = <&ina238>,"shunt-resistor:0";
gain = <&ina238>,"ti,shunt-gain:0";
};
};
1 change: 1 addition & 0 deletions arch/arm/configs/bcm2709_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -751,6 +751,7 @@ CONFIG_SENSORS_SHT4x=m
CONFIG_SENSORS_SHTC1=m
CONFIG_SENSORS_EMC2305=m
CONFIG_SENSORS_INA2XX=m
CONFIG_SENSORS_INA238=m
CONFIG_SENSORS_TMP102=m
CONFIG_BCM2835_THERMAL=y
CONFIG_WATCHDOG=y
Expand Down
1 change: 1 addition & 0 deletions arch/arm/configs/bcm2711_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -775,6 +775,7 @@ CONFIG_SENSORS_SHT4x=m
CONFIG_SENSORS_SHTC1=m
CONFIG_SENSORS_EMC2305=m
CONFIG_SENSORS_INA2XX=m
CONFIG_SENSORS_INA238=m
CONFIG_SENSORS_TMP102=m
CONFIG_BCM2711_THERMAL=y
CONFIG_WATCHDOG=y
Expand Down
1 change: 1 addition & 0 deletions arch/arm/configs/bcmrpi_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -745,6 +745,7 @@ CONFIG_SENSORS_SHT4x=m
CONFIG_SENSORS_SHTC1=m
CONFIG_SENSORS_EMC2305=m
CONFIG_SENSORS_INA2XX=m
CONFIG_SENSORS_INA238=m
CONFIG_SENSORS_TMP102=m
CONFIG_BCM2835_THERMAL=y
CONFIG_WATCHDOG=y
Expand Down
1 change: 1 addition & 0 deletions arch/arm64/configs/bcm2711_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -806,6 +806,7 @@ CONFIG_SENSORS_SHT4x=m
CONFIG_SENSORS_SHTC1=m
CONFIG_SENSORS_EMC2305=m
CONFIG_SENSORS_INA2XX=m
CONFIG_SENSORS_INA238=m
CONFIG_SENSORS_TMP102=m
CONFIG_SENSORS_RP1_ADC=m
CONFIG_BCM2711_THERMAL=y
Expand Down
1 change: 1 addition & 0 deletions arch/arm64/configs/bcm2712_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -808,6 +808,7 @@ CONFIG_SENSORS_SHT4x=m
CONFIG_SENSORS_SHTC1=m
CONFIG_SENSORS_EMC2305=m
CONFIG_SENSORS_INA2XX=m
CONFIG_SENSORS_INA238=m
CONFIG_SENSORS_TMP102=m
CONFIG_SENSORS_RP1_ADC=m
CONFIG_BCM2711_THERMAL=y
Expand Down
1 change: 1 addition & 0 deletions arch/arm64/configs/bcmrpi3_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -746,6 +746,7 @@ CONFIG_SENSORS_SHT4x=m
CONFIG_SENSORS_SHTC1=m
CONFIG_SENSORS_EMC2305=m
CONFIG_SENSORS_INA2XX=m
CONFIG_SENSORS_INA238=m
CONFIG_SENSORS_TMP102=m
CONFIG_BCM2835_THERMAL=y
CONFIG_WATCHDOG=y
Expand Down
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